if you select a PIE CHART in "View Campaign" the King-Phisher Clients crashes with the following trace:

Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/matplotlib/backends/backend_gtk3cairo.py", line 33, in on_draw_event
self._render_figure(allocation.width, allocation.height)
File "/usr/lib/python3/dist-packages/matplotlib/backends/backend_gtk3cairo.py", line 21, in _render_figure
self.figure.draw(self._renderer)
File "/usr/lib/python3/dist-packages/matplotlib/artist.py", line 50, in draw_wrapper
return draw(artist, renderer, *args, kwargs)
File "/usr/lib/python3/dist-packages/matplotlib/figure.py", line 1649, in draw
renderer, self, artists, self.suppressComposite)
File "/usr/lib/python3/dist-packages/matplotlib/image.py", line 138, in _draw_list_compositing_images
a.draw(renderer)
File "/usr/lib/python3/dist-packages/matplotlib/artist.py", line 50, in draw_wrapper
return draw(artist, renderer, *args, *kwargs)
File "/usr/lib/python3/dist-packages/matplotlib/legend.py", line 646, in draw
self.legendPatch.draw(renderer)
File "/usr/lib/python3/dist-packages/matplotlib/artist.py", line 50, in draw_wrapper
return draw(artist, renderer, args, kwargs)
File "/usr/lib/python3/dist-packages/matplotlib/patches.py", line 535, in draw
renderer.draw_path(gc, tpath, affine, rgbFace)
File "/usr/lib/python3/dist-packages/matplotlib/backends/backend_cairo.py", line 239, in draw_path
_append_path(ctx, path, transform, clip)
File "/usr/lib/python3/dist-packages/matplotlib/backends/backend_cairo.py", line 163, in _append_path
return _append_paths(ctx, [path], [transform], clip)
File "/usr/lib/python3/dist-packages/matplotlib/backends/backend_cairo.py", line 104, in _append_paths_slow
np.concatenate([cur / 3 + points[:2] 2 / 3,
TypeError: unsupported operand type(s) for /: 'tuple' and 'int'